Horizontal constant temperature anaerobic bioreactor with simultaneous ball milling pretreatment and microbial fermentation

Abstract

The present invention discloses a horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation. In order to overcome the problems of long time / high cost for raw material pretreatment and low conversion efficiency of high-concentration materials caused by the separation of pretreatment and fermentation process in traditional anaerobic fermentation, the invention comprises a spiral feeding system, a ball milling fermentation system, an automatic control system, a frame and a base. The material is transported to the ball milling fermentation tank by a spiral conveyor, and the rotation of the tank body drives the crushing balls to fall from a high place and hit the material to achieve crushing pretreatment. At the same time, the microorganisms in the tank degrade the material, and the fermented material enters the discharge end through the crushing ball barrier net under the axial thrust of the tank body. The pneumatic sealing gate valve ensures the anaerobic conditions in the fermentation tank during feeding / taking, the constant temperature water circulation system heats and insulates the tank body, and the automatic control system monitors and regulates the temperature, pH and ORP in the tank in real time to ensure the most suitable fermentation conditions, thereby achieving continuous and simultaneous ball milling pretreatment and constant temperature anaerobic fermentation of biomass raw materials.

Description

Technical Field

[0001] The invention belongs to the technical field of solid biomass pretreatment and anaerobic fermentation, and in particular relates to a horizontal constant-temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation. Background Art

[0002] Pretreatment can change the physical structure of raw materials, increase the contact area between microorganisms / enzymes and fermentation substrates, and increase accessibility, thereby improving the efficiency of microbial enzymatic hydrolysis, raw material utilization, and fermentation product yield. Ball milling pretreatment can loosen the structure of lignocellulose and break the intermolecular hydrogen bonds in the microfibrils and in the crystal regions between microfibrils. Therefore, the enzymatic hydrolysis rate and raw material utilization of microorganisms can be improved through ball milling pretreatment technology. Microbial fermentation reactors are widely used in food, chemical and other industries, mainly to cultivate microorganisms to ferment raw materials. However, most microorganisms have harsh growth conditions and strict requirements on the fermentation environment, such as strict anaerobic environment, constant temperature, and suitable pH.

[0003] However, the separation of pretreatment and fermentation process in traditional microbial fermentation reactors leads to problems such as long raw material pretreatment time / high cost, low conversion efficiency of high-concentration materials, etc. Therefore, it is very important to combine the ball mill with the anaerobic fermentation tank to invent an anaerobic bioreactor that can simultaneously pretreat the raw materials and perform continuous constant temperature fermentation under conditions suitable for the growth of microorganisms. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of long raw material pretreatment time, high cost, low high-concentration material conversion efficiency caused by the separation of pretreatment and fermentation process in traditional microbial fermentation reactors, and to provide a horizontal constant temperature anaerobic bioreactor that simultaneously performs ball milling pretreatment and microbial fermentation.

[0005] A horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation, comprising a spiral

[0006] Feeding system, ball mill fermentation system, automatic control system, rack and base;

[0007] The spiral feeding system and the ball milling fermentation system are supported by a frame, the frame is a hollow structural member, the base is a flat structural member, and the frame is fixed to the base by loading and unloading screws; the automatic control system is connected to the spiral feeding system and the ball milling fermentation system respectively;

[0008] The screw feeding system comprises an auger screw feeder, a pneumatic sealing gate valve, a left end support and a middle end support; the auger screw feeder is supported by the left end support and the middle end support, the pneumatic sealing gate valve is arranged outside the auger screw feeder, the gate size of the pneumatic sealing gate valve is the same as the size of the sealing plate clamp on the feeding pipe groove of the auger screw feeder, and is located in the same plane parallel to the base, and the feeding motor is connected to one end of the auger shaft of the auger screw feeder;

[0009] The auger screw feeder is a cylindrical welded part, including a feed pipe groove, a sealing plate clamp, a feed pipe groove, an auger shaft, a spiral feeding blade, a rhombus seat, a hexagonal bolt and a roller bearing with a seat. The feed pipe groove is welded to the surface of the cylindrical shell of the feed pipe groove. A sealing plate clamp is provided on the outer edge of the top of the feed pipe groove. The sealing plate clamp is used in conjunction with a plug plate, and the size of the plug plate is the same as that of the sealing plate clamp on the feed pipe groove, and is located in the same plane parallel to the base; the welded part of the circular cylinder of the feed pipe groove and the feed pipe groove is provided with a through hole of corresponding size, and one end of the circular cylinder of the feed pipe groove is provided with a through hole of corresponding size. An end cover is provided, which is connected to the circular cylinder of the feeding pipe groove as a whole. A rhombus seat and a roller bearing with a seat are installed on the end cover. The roller bearing with a seat is fixed to the rhombus seat by a hexagonal bolt, and then fixed to the end cover. The other end of the circular cylinder of the feeding pipe groove is inserted into the circular through-hole groove of the middle end support by interference fit; one end of the auger shaft forms an interference fit with the roller bearing with a seat on the end cover through a sealing device, and the other end passes through the circular cylinder of the feeding pipe groove and extends to the end cover of the double-layer ball mill fermentation tank body; the spiral feeding blade is fixedly welded on the auger shaft, and its horizontal length is the same as the length of the auger shaft;

[0010] The auger screw conveyor is supported by a left-end support and a middle-end support. The left-end support is a semicircular fixed bracket and a flat bracket casting, which is fixed to the conveying pipe groove by a set screw. The inner radius of the semicircular fixed bracket is equal to the outer radius of the conveying pipe groove. The flat bracket is fixed to the fixed base and is used to support the feeding part of the auger screw conveyor. The central axis of the pipe groove of the auger screw conveyor is in a straight line with the central axis of the cylindrical tube of the feeding end of the double-layer ball mill fermentation tank body; the middle-end support is a circular fixed bracket and a flat bracket welded casting. Grooves are provided at both ends of the through hole of the circular fixed bracket. The circular barrel of the auger screw conveyor is inserted into the groove at one end by interference fit. The hollow shaft on the end cover of the outer tank body of the double-layer ball mill fermentation tank is inserted into the groove at the other end by interference fit through a deep groove ball bearing and a sealing device. The flat bracket is fixed to the fixed base and is used to support the auger screw conveyor.

[0011] The said roller bearing with seat is fixed on the diamond seat by hexagonal bolts, and then fixed on the end cover of the circular cylinder of the conveying pipe groove. It includes an outer ring, an inner ring, a rolling element, a retainer, a seal, and lubricating oil. The diamond seat is fixed to the middle part of the roller bearing with seat and the end cover by hexagonal bolts, and forms an interference fit with the sealing device.

[0012] The pneumatic sealing gate valve includes a gate, a connector, a cylinder and an auxiliary support frame. The gate is made of cast iron, one end of which is fixed to the connector by a hexagonal bolt and a hexagonal nut. One end of the connector is connected to the gate, and the other end is connected to the cylinder device. The cylinder in the cylinder device is fixed to the cylinder seat by a set screw. The cylinder seat is supported by several cylinder support frames and auxiliary supported by several auxiliary support frames. Each cylinder support frame is assisted by two auxiliary support frames.

[0013] The ball mill fermentation system comprises a double-layer ball mill fermentation tank body, a gear transmission belt, a gear transmission device, and a deep groove ball bearing. The double-layer ball mill fermentation tank body is a cylindrical welded part, one end of which is a welded part of a circular cylinder, an end cover and a hollow shaft, and the other end is a welded part of an end cover, a deep groove ball bearing and a solid shaft; the tank body is supported on a middle end support and a right end support respectively through the hollow shafts on the end covers at both ends, the hollow shaft at one end of the tank body close to the feeding system passes through the deep groove ball bearing and is inserted into the groove of the middle end support through an interference fit, a sealing device is installed in the middle part of the groove and the hollow shaft, and an interference fit is formed by the sealing device to ensure the air tightness of the device during operation; the deep groove ball bearing is fastened by the hexagonal bolt It is fixed on the diamond seat with a key and a shoulder; a key and a shoulder are installed in the weldment at one end of the tank body close to the gas collecting device, and the deep groove ball bearing is stably fixed on the end cover under the action of the key and the shoulder; the right end support is a casting of a circular structure and a flat bracket, and the hexagonal bolts fasten the deep groove ball bearing to the diamond seat and the right end support through the through holes on the diamond seat, the deep groove ball bearing and the right end support. The weldment of the end cover, the deep groove ball bearing and the solid shaft passes through the circular through hole of the right end support and is fixed to the circular structure of the right end support by a set screw. The gas collecting pipe runs through the entire end cover, the deep groove ball bearing and the solid shaft weldment, one end of which extends to the end cover of the double-layer ball mill fermentation tank body, and the other end extends to the outside of the solid shaft;

[0014] The double-layer ball mill fermentation tank body comprises an outer tank body, an inner cylinder body, a hot circulating water inlet, a hot circulating water outlet, and a solenoid valve. The cavity between the outer tank body and the inner cylinder body is used for circulating hot water. The outer tank body is provided with a hot circulating water inlet and a hot circulating water outlet. Both the hot circulating water inlet and the hot circulating water outlet are cylindrical structures. The hot circulating water inlet is arranged at the bottom of the left end of the outer tank body of the double-layer ball mill fermentation tank. The hot circulating water outlet is arranged at the top of the right side of the outer tank body of the double-layer ball mill fermentation tank corresponding to the hot circulating water inlet. Both the hot circulating water inlet and the hot circulating water outlet are equipped with solenoid valves.

[0015] The inner cylinder of the double-layer ball mill fermentation tank includes a wear-resistant lining, crushing balls, a crushing ball barrier net, a discharge port, and a discharge port plug. The wear-resistant lining is a cylindrical structure, with a total of eight, and the sizes are exactly the same. Its central axis is parallel to the central axis of the inner cylinder of the double-layer ball mill fermentation tank. The angle between the connecting line of each central axis and the central axis of the inner cylinder is used as the positioning standard. They are evenly fixed on the inner wall of the inner cylinder of the double-layer ball mill fermentation tank at intervals of 45 degrees; one end of the wear-resistant lining extends to the end cover of the inner cylinder of the double-layer ball mill fermentation tank, and the other end extends to the crushing ball barrier net; there are several honeycomb-shaped uniform grids on the crushing ball barrier net, which are fixed to the cross-section of the inner cylinder of the double-layer ball mill fermentation tank and the position connected to the left end of the wear-resistant lining to block the crushing balls; the crushing balls are made of alumina and are placed in the internal cavity of the inner cylinder of the double-layer ball mill fermentation tank and on the left side of the crushing ball barrier net. The diameter is 3 cm, the number of crushing balls is determined by the quality of the fermentation material; the discharge port is set on the right side of the crushing ball barrier net, penetrates to the outside of the outer tank body of the ball mill fermentation tank, and is located on the same horizontal line as the hot circulating water inlet. The discharge port is equipped with a discharge port plug, which is an interference fit with the discharge port and is made of rubber.

[0016] The gear conveyor belt is fixed on the outer tank body of the double-layer ball mill fermentation tank, and forms a meshing transmission with the pinion in the gear transmission device. The gear transmission device includes two identical pinion transmission systems and a fixed base. The two identical pinion transmission systems are respectively arranged at symmetrical positions on both sides of the double-layer ball mill fermentation tank, one of which is a driving wheel system and the other is a driven wheel system.

[0017] The pinion transmission system includes a pinion shaft, a vertical seat bearing, a pinion, a key, a shoulder, a hexagonal bolt, a flat washer and an elastic washer. The pinion is sheathed together with the pinion shaft through the key and the shoulder and fixed in the middle position of the pinion shaft. The pinion shaft drives the double-layer ball mill fermentation tank body to rotate through the middle pinion. The two ends of the pinion shaft respectively pass through two vertical seat bearings and form an interference fit; the two vertical seat bearings are fixed to the fixed base through four hexagonal bolts, and flat washers and spring washers are installed at the connection between the vertical seat bearings and the hexagonal bolts. The transmission device base 23 is a rectangular flat steel plate fixed to the base of the entire device.

[0018] The automatic control system includes an information input module, an information analysis module,

[0019] PLC control module and command output module, the information input module is connected to the information analysis module, the information analysis module is connected to the PLC control module, and the PLC control module is connected to the command output module;

[0020] The information input module includes a time information input unit, a temperature information input unit, a pH information input unit and an ORP information input unit, so as to input the time of circulating hot water, motor running time, temperature, pH and ORP information; the PLC control module includes a hot circulating water connection module, a motor module, a hot circulating water disconnection module, and a temperature / PH / ORP control module; the command output module includes a command extraction unit, a command determination unit and a command execution unit.

[0021] The pneumatic sealing gate valve is made of a stainless steel-rubber mixed material.

[0022] The sealing device is a mechanical seal.

[0023] The cylinder seat, cylinder support and auxiliary support are all made of cast iron.

[0024] The crushing ball is made of alumina and has a diameter of 3 cm.

[0025] The crushing ball barrier net is a honeycomb mesh structure.

[0026] The wear-resistant lining is made of stainless steel.

[0027] The controller is a PLC, which controls the temperature in the tank at 30-65°C, the pH value at 5-8, and the ORP at 200-600mv, and controls the feed motor, hot water circulation pump and solenoid valve at the same time.

[0028] Before simultaneous ball milling pretreatment and microbial anaerobic fermentation, the spiral feeding system, ball milling fermentation system and automatic control system are fixed to the fixed base by hexagonal bolts, the left end of the spiral feeding system is inserted into the groove at one end of the middle end support and forms an interference fit therewith, and the right end is supported by the left end support; the right end of the ball milling fermentation system passes through the deep groove ball bearing and is inserted into the groove at the other end of the middle end support, and forms an interference fit with the middle end support through a mechanical seal, which can meet the rotation requirements of the double-layer ball milling fermentation tank body and ensure the air tightness of the device; the outlet end of the gas collecting pipe at the left end of the ball milling fermentation system is connected to a gas collection device for collecting gases generated during the fermentation process.

[0029] First, connect the power supply, and the automatic control system controls the operation of the feeding motor and the ball mill motor. The material enters the feeding pipe groove of the auger screw feeder from the feeding pipe groove of the auger screw feeder. The feeding motor drives the auger shaft to rotate. The spiral blades generate forward thrust as the auger shaft rotates, and the fermented material is transported through the hollow shaft neck of the feeding pipe groove into the double-layer ball mill fermentation tank body.

[0030] During the feeding process, the pneumatic sealing gate valve uses compressed air as the power, changes the direction of the air path through the solenoid valve, pushes the piston of the cylinder, and drives the gate of the pneumatic sealing gate valve to reciprocate horizontally, so that the valve of the pneumatic sealing gate valve opens during feeding, and the valve closes after the feeding is completed, thereby ensuring the air tightness of the device during feeding.

[0031] When the ball mill motor is working, it drives the gear transmission device to run, and then drives the pinion to rotate. The pinion meshes with the gear conveyor belt on the outer tank body of the double-layer ball mill fermentation tank, and then drives the tank body of the double-layer ball mill fermentation tank to rotate. When the tank body of the double-layer ball mill fermentation tank rotates, the crushing balls in the tank adhere to the inner wall of the inner cylinder and rotate together with the inner cylinder under the friction and centrifugal force of the wear-resistant lining. After the crushing balls are brought to a certain height, the speed of the crushing balls drops to zero. Due to the gravity of the crushing balls themselves, they fall freely or fall, which impacts the materials. At the same time, the crushing balls will also slide and roll, so that the materials in between are subjected to stripping and grinding force, so that the materials are continuously impacted and stripped and crushed. Because the impact of the material when the medium falls produces axial thrust, therefore, although the tank body of the double-layer ball mill fermentation tank is placed horizontally, the materials can slowly flow from the feed end to the discharge port to complete the continuous crushing pretreatment; the fermented materials enter the discharge end, and are discharged from the discharge port after the discharge plug is removed.

[0032] The double-layer ball mill fermentation tank is equipped with a crushing ball barrier net inside the tank.

[0033] Preventing the crushing balls from being discharged along with the fermented materials can ensure continuous ball milling pretreatment of solid biomass raw materials.

[0034] When in use, the time, temperature, pH and ORP information are input through the information input module, and the information analysis module analyzes the input information. After the analysis, the time, temperature, pH and ORP information are transmitted to the PLC control module; after the PLC control module receives the information, the hot circulating water inlet module controls the hot circulating water inlet and the hot circulating water outlet to be connected to the water inlet pipe and the water outlet pipe respectively, and the solenoid valve is opened at the same time, and the feeding motor and the ball mill motor are controlled to run through the motor module so that they are closed when circulating hot water, and the hot circulating water inlet and the hot circulating water outlet module controls the hot circulating water inlet and the hot circulating water outlet to be disconnected from the water inlet pipe and the water outlet pipe respectively, and the solenoid valve is closed at the same time, and the temperature / PH / ORP control module is used to detect and adjust the temperature / PH / ORP in the fermentation process, and the control command of the PLC control module is further transmitted to the command output unit; the command output unit extracts the control command of the PLC control module, then confirms it, and finally executes it.

[0035] Beneficial effects of the present invention:

[0036] 1. The present invention combines ball milling pretreatment with microbial anaerobic fermentation to carry out "simultaneous ball milling pretreatment of solid biomass and continuous constant temperature anaerobic fermentation", which can not only improve the bioconversion efficiency of solid biomass raw materials and obtain more fermentation products, but also reduce the cost of pretreatment and anaerobic fermentation.

[0037] 2. The present invention has a simple structure and is easy to install. By installing a pneumatic sealing gate valve outside the auger screw feeder, the problem of air tightness of the device during feeding is solved, ensuring the strict anaerobic environment required for continuous constant temperature fermentation of anaerobic microorganisms.

[0038] 3. The hollow shaft of the end cover of the double-layer ball mill fermentation tank body near the feeding device in the present invention forms an interference fit with the deep groove ball bearing through a mechanical seal, which not only meets the requirement of uniform rotation of the double-layer ball mill fermentation tank, but also ensures the air tightness of the device.

[0039] 4. The inner tank body of the double-layer ball mill fermentation tank in the present invention is equipped with a crushing ball barrier net to prevent the crushing balls from being discharged together with the fermented materials, thereby ensuring the continuous ball milling pretreatment of the solid biomass raw materials.

[0040] 5. The inner tank body of the double-layer ball mill fermentation tank in the present invention is installed with wear-resistant linings, which are evenly distributed and can drive the crushing balls to rotate. When the gravity of the crushing balls themselves is greater than the supporting force of the wear-resistant linings, the crushing balls fall vertically, and then impact and crush the solid biomass raw materials to achieve the purpose of ball mill pretreatment.

[0041] 6. The present invention controls the rotation of the fermentation tank and the circulation of hot water through an automatic control system to meet different fermentation requirements, and at the same time monitors and controls the temperature, pH and ORP in the fermentation tank in real time to ensure the optimal reaction conditions for microbial fermentation. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a front view of an embodiment of the present invention;

[0043] Figure 2 It is a three-dimensional schematic diagram of a feeding system according to an embodiment of the present invention;

[0044] Figure 3 A cross-sectional view of an auger screw conveyor according to an embodiment of the present invention;

[0045] Figure 4 It is a right side view of the auger screw conveyor according to an embodiment of the present invention;

[0046] Figure 5 A schematic diagram of a pneumatic sealing plate device according to an embodiment of the present invention;

[0047] Figure 6 A schematic diagram of a middle end support according to an embodiment of the present invention;

[0048] Figure 7 A three-dimensional schematic diagram of a ball mill fermentation system according to an embodiment of the present invention;

[0049] Figure 8 A cross-sectional view of a double-layer ball mill fermentation tank according to an embodiment of the present invention;

[0050] Fig. 9 It is a right side view of the double-layer ball mill fermentation tank body according to an embodiment of the present invention;

[0051] Fig.10 A schematic diagram of a crushing ball barrier net according to an embodiment of the present invention;

[0052] Fig.11 It is a structural diagram of a pinion transmission system according to an embodiment of the present invention;

[0053] Fig.12 It is a left view of the pinion transmission system of an embodiment of the present invention;

[0054] Fig.13 It is a structural diagram of the right end support of an embodiment of the present invention;

[0055] Fig.14 Schematic diagram of the structure of an automatic control system according to an embodiment of the present invention.

[0056] In the figure: A-screw feeding system; B-ball mill fermentation system; C-automatic control system; D-frame; E-base; 1-auger screw feeder; 2-pneumatic sealing plug valve; 3-left end support; 4-middle end support; 5-set screw; 6-feeding pipe groove; 7-auger shaft; 8-screw feeding blade; 9-hexagonal bolt; 10-sealing device; 11-feeding pipe groove; 12-sealing plate clamp; 13-diamond seat; 14-roller bearing with seat; 15-plug plate; 16-connector; 17-cylinder; 18-auxiliary support; 19-deep groove ball bearing; 20-double-layer ball mill fermentation tank body; 21-gear transmission belt ; 22-right end support; 23-conveyor device fixed base; 24-gear transmission device; 25-outer tank body; 26-mechanical seal; 27-hot circulating water inlet; 28-solenoid valve; 29-wear-resistant lining; 30-crushing ball; 31-crushing ball barrier net; 32-discharge plug; 33-discharge port; 34-gas collecting pipe; 35-shaft shoulder; 36-key; 37-hot circulating water outlet; 38-inner cylinder of double-layer ball mill fermentation tank; 39-pinion; 40-with vertical seat bearing; 41-pinion shaft; 42-flat washer; 43-spring washer; 44-information input module; 45-information analysis module; 46-PLC control module; 47-command output module. DETAILED DESCRIPTION

[0057] See also Figure 1 , Figure 2 , Figure 3, Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.14 The following is a specific embodiment of the present invention.

[0058] A horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation, comprising a spiral

[0059] Feeding system A, ball mill fermentation system B, automatic control system C, frame D and base E;

[0060] The spiral feeding system A and the ball milling fermentation system B are supported by a frame D, the frame D is a hollow structural member, the base E is a flat structural member, and the frame D is fixed to the base E by loading and unloading screws; the automatic control system C is connected to the spiral feeding system A and the ball milling fermentation system B respectively;

[0061] The screw feeding system A comprises an auger screw feeder 1, a pneumatic sealing gate valve 2, a left end support 3 and a middle end support 4; the auger screw feeder 1 is supported by the left end support 3 and the middle end support 4, the pneumatic sealing gate valve 2 is arranged outside the auger screw feeder 1, the gate size of the pneumatic sealing gate valve 2 is the same as the size of the sealing plate clamp 12 on the feeding pipe groove 11 of the auger screw feeder, and is located in the same plane parallel to the base E, and the feeding motor is connected to one end of the auger shaft 7 of the auger screw feeder;

[0062] The auger screw feeder 1 is a cylindrical welded part, including a feed pipe groove 11, a sealing plate clamp 12, a feed pipe groove 6, an auger shaft 7, a spiral feeding blade 8, a rhombus seat 13, a hexagonal bolt 9 and a roller bearing 14 with a seat. The feed pipe groove 11 is welded to the surface of the cylindrical shell of the feed pipe groove 6. A sealing plate clamp 12 is provided on the top outer edge of the feed pipe groove 11. The sealing plate clamp 12 is used in conjunction with a plug plate 15. The size of the plug plate 15 is the same as that of the sealing plate clamp 12 on the feed pipe groove 11, and is located in the same plane parallel to the base; the portion where the circular cylinder of the feed pipe groove 6 is welded to the feed pipe groove 11 is provided with a through hole of corresponding size, and the circular cylinder of the feed pipe groove 6 is provided with a through hole of corresponding size. An end cap is provided at one end of the cylindrical body, which is connected to the circular cylindrical body of the feeding pipe groove 11 as a whole, and a rhombus seat 13 and a roller bearing 14 with a seat are installed on the end cap, and the roller bearing 14 with a seat is fixed to the rhombus seat 13 by a hexagonal bolt 9, and then fixed to the end cap, and the other end of the circular cylindrical body of the feeding pipe groove 6 is inserted into the circular through-hole groove of the middle end support 4 by interference fit; one end of the auger shaft 7 forms an interference fit with the roller bearing 14 with a seat on the end cap through a sealing device 10, and one end passes through the circular cylindrical body of the feeding pipe groove 6 and extends to the end cap of the double-layer ball mill fermentation tank body 16; the spiral feeding blade 8 is fixedly welded on the auger shaft 7, and its horizontal length is the same as that of the auger shaft 7;

[0063] The auger screw feeder 1 is supported by a left end support 3 and a middle end support 4. The left end support 3 is a semicircular fixed support and a flat support casting, which is fixed to the feed pipe groove 6 by a set screw 5. The inner radius of the semicircular fixed support is equal to the outer radius of the feed pipe groove 6. The flat support is fixed to the fixed base E and is used to support the feeding part of the auger screw feeder 1. The central axis of the pipe groove of the auger screw feeder 1 is in a straight line with the central axis of the cylindrical tube of the feeding end of the double-layer ball mill fermentation tank body 20; the middle end support 4 is a circular fixed support and a flat support welding casting. Grooves are provided at both ends of the through hole of the circular fixed support. The circular barrel of the auger screw feeder 1 is inserted into the groove at one end by interference fit. The hollow shaft on the end cover of the outer tank body 25 of the double-layer ball mill fermentation tank is inserted into the groove at the other end by interference fit through a deep groove ball bearing 19 and a sealing device 10. The flat support is fixed to the fixed base E and is used to support the auger screw feeder 1;

[0064] The said roller bearing 14 is fixed to the diamond seat 13 by the hexagonal bolt 9, and then fixed to the end cover of the circular cylinder of the feeding pipe groove 6, which includes an outer ring, an inner ring, a rolling element, a retainer, a seal, and lubricating oil. The diamond seat 13 is fixed to the middle part of the roller bearing 14 and the end cover by the hexagonal bolt 9, and forms an interference fit with the sealing device 10;

[0065] The pneumatic sealing gate valve 2 includes a gate 15, a connector 16, a cylinder 17 and an auxiliary support frame 18. The gate 15 is made of cast iron, and one end of the gate 15 is fixed to the connector 16 by a hexagonal bolt and a hexagonal nut. One end of the connector 16 is connected to the gate 15, and the other end is connected to the cylinder device. The cylinder 17 in the cylinder device is fixed to the cylinder seat by a set screw. The cylinder seat is supported by several cylinder support frames and auxiliary supported by several auxiliary support frames 18. Each cylinder support frame is assisted by two auxiliary support frames 18.

[0066] The ball mill fermentation system B comprises a double-layer ball mill fermentation tank body 20, a gear transmission belt 21, a gear transmission device 24, and a deep groove ball bearing 19. The double-layer ball mill fermentation tank body 20 is a cylindrical welded part, one end of which is a welded part of a circular cylinder, an end cover and a hollow shaft, and the other end is a welded part of an end cover, a deep groove ball bearing 19 and a solid shaft; the tank body is supported on the middle end support 4 and the right end support 22 respectively through the hollow shafts on the end covers at both ends, and the hollow shaft at one end of the tank body close to the feeding system passes through the deep groove ball bearing 19 and is inserted into the groove of the middle end support 4 through an interference fit, and a sealing device 10 is installed in the middle part of the groove and the hollow shaft, and an interference fit is formed by the sealing device 10 to ensure the air tightness during the operation of the device; the deep groove ball bearing 19 is fixed in the diamond-shaped The key 36 and the shoulder 35 are installed in the weldment at one end of the tank body near the gas collecting device, and the deep groove ball bearing 19 is stably fixed on the end cover under the action of the key 36 and the shoulder 35; the right end support 22 is a casting of a circular structure and a flat bracket, and the hexagonal bolt 9 fastens the deep groove ball bearing 19 with the diamond seat 13 and the right end support 22 through the through holes on the diamond seat 13, the deep groove ball bearing 19 and the right end support 22. The weldment of the end cover, the deep groove ball bearing 19 and the solid shaft passes through the circular through hole of the right end support 22 and is fixed to the circular structure of the right end support 22 by the set screw 5. The gas collecting pipe 34 runs through the entire end cover, the deep groove ball bearing 19 and the solid shaft weldment, one end of which extends to the end cover of the double-layer ball mill fermentation tank body 20, and the other end extends to the outside of the solid shaft;

[0067] The double-layer ball mill fermentation tank body 20 includes an outer tank body 25, an inner cylinder body 38, a hot circulating water inlet 27, a hot circulating water outlet 37, and a solenoid valve 28. The cavity between the outer tank body 25 and the inner cylinder body 38 is used for circulating hot water. The outer tank body 25 is provided with a hot circulating water inlet 27 and a hot circulating water outlet 37. The hot circulating water inlet 27 and the hot circulating water outlet 37 are both cylindrical structures. The hot circulating water inlet 27 is arranged at the bottom of the left end of the outer tank body 25 of the double-layer ball mill fermentation tank. The hot circulating water outlet is arranged at the top of the right side of the outer tank body 25 of the double-layer ball mill fermentation tank and corresponds to the hot circulating water inlet 27. The hot circulating water inlet 27 and the hot circulating water outlet 37 are both equipped with a solenoid valve 28.

[0068] The inner cylinder 38 of the double-layer ball mill fermentation tank includes a wear-resistant liner 29, a crushing ball 30, a crushing ball barrier net 31, a discharge port 33, and a discharge port plug 32. The wear-resistant liner 29 is a cylindrical structure, a total of eight, and the size is exactly the same. The central axis is parallel to the central axis of the inner tank body of the double-layer ball mill fermentation tank. The angle between the connecting line of each central axis and the central axis of the inner tank body is used as the positioning standard. They are evenly fixed to the inner cylinder 2 of the double-layer ball mill fermentation tank at intervals of 45 degrees. 4 inner wall; one end of the wear-resistant lining plate 29 extends to the end cover of the inner cylinder 38 of the double-layer ball mill fermentation tank, and the other end extends to the crushing ball barrier net 31; there are several honeycomb-shaped uniform grids on the crushing ball barrier net 31, which are fixed to the cross-section of the inner tank body of the double-layer ball mill fermentation tank and the position connected to the left end of the wear-resistant lining plate 29, and are used to block the crushing balls 30; the crushing balls 30 are made of aluminum oxide, placed in the inner cavity of the inner cylinder 38 of the double-layer ball mill fermentation tank and on the left side of the crushing ball barrier net 31, with a diameter of 3 cm, and the number of crushing balls 30 is determined according to the quality of the fermentation material; the discharge port 33 is set on the right side of the crushing ball barrier net 31, penetrates to the outside of the outer tank body 25 of the ball mill fermentation tank, and is located on the same horizontal line as the hot circulating water inlet 27, and the discharge port 33 is equipped with a discharge port plug 32, and the discharge port plug 32 and the discharge port 33 are interference fit, and the material is rubber material.

[0069] The gear conveyor belt 21 is fixed on the outer tank body 25 of the double-layer ball mill fermentation tank, and forms a meshing transmission with the pinion 39 in the gear transmission device. The gear transmission device includes two identical pinion transmission systems and a fixed base. The two identical pinion transmission systems are respectively arranged at symmetrical positions on both sides of the double-layer ball mill fermentation tank, one of which is a driving wheel system and the other is a driven wheel system.

[0070] The pinion transmission system includes a pinion shaft 41, a vertical seat bearing 40, a pinion 39, a key 36, a shoulder 35, a hexagonal bolt 9, a flat washer 42 and an elastic washer 43. The pinion 39 is sheathed together with the pinion shaft 41 through the key 36 and the shoulder 35, and is fixed in the middle position of the pinion shaft 41. The pinion shaft 41 drives the double-layer ball mill fermentation tank body 20 to rotate through the middle pinion 39. The two ends of the pinion shaft 41 respectively penetrate two vertical seat bearings 40 and form an interference fit; the two vertical seat bearings 40 are fixed to the fixed base through four hexagonal bolts 9, and a flat washer 42 and a spring washer 43 are installed at the connection between the vertical seat bearing 40 and the hexagonal bolt 9. The transmission device base 23 is a rectangular flat steel plate fixed to the base E of the entire device.

[0071] The automatic control system C includes an information input module 44, an information analysis module 45,

[0072] PLC control module 46 and command output module 47, the information input module 44 is connected to the information analysis module 45, the information analysis module 45 is connected to the PLC control module 46, and the PLC control module 46 is connected to the command output module 47;

[0073] The information input module 44 includes a time information input unit, a temperature information input unit, a pH information input unit and an ORP information input unit, so as to input the time of circulating hot water, motor running time, temperature, pH and ORP information; the PLC control module 46 includes a hot circulating water connection module, a motor module, a hot circulating water disconnection module, and a temperature / PH / ORP control module; the command output module 47 includes a command extraction unit, a command determination unit and a command execution unit.

[0074] The pneumatic sealing gate valve 2 is made of a stainless steel-rubber mixed material.

[0075] The sealing device 10 is a mechanical seal.

[0076] The cylinder seat, cylinder support and auxiliary support 18 are all made of cast iron.

[0077] The crushing ball 30 is made of alumina and has a diameter of 3 cm.

[0078] The crushing ball barrier net 31 is a honeycomb mesh structure.

[0079] The wear-resistant lining plate 29 is made of stainless steel.

[0080] The controller is a PLC, which controls the temperature in the tank at 30-65°C, the pH value at 5-8, and the ORP at 200-600mv, and controls the feed motor, hot water circulation pump and solenoid valve at the same time.

[0081] Before simultaneous ball milling pretreatment and microbial anaerobic fermentation, the spiral feeding system A, the ball milling fermentation system B and the automatic control system C are fixed to the fixed base E by means of hexagonal bolts 9, the left end of the spiral feeding system A is inserted into the groove at one end of the middle end support 4 and forms an interference fit therewith, and the right end is supported by the left end support 3; the right end of the ball milling fermentation system B is inserted into the groove at the other end of the middle end support 4 through the deep groove ball bearing, and forms an interference fit with the middle end support 4 through the mechanical seal 10, which can meet the rotation requirement of the double-layer ball milling fermentation tank body 20 and ensure the air tightness of the device; the outlet end of the gas collecting pipe 34 at the left end of the ball milling fermentation system B is connected to a gas collection device for collecting the gas generated during the fermentation process.

[0082] First, connect the power supply, and the automatic control system C controls the operation of the feeding motor and the ball mill motor. The material enters the feeding pipe groove 6 of the auger screw conveyor 1 through the feeding pipe groove 11 of the auger screw conveyor 1. The feeding motor drives the auger shaft 7 to rotate. The spiral blades 8 generate forward thrust as the auger shaft 7 rotates, and the fermented material is transported through the hollow shaft neck of the feeding pipe groove 6 to the double-layer ball mill fermentation tank body 20.

[0083] During the feeding process, the pneumatic sealing gate valve 2 uses compressed air as power to change the direction of the air path through the solenoid valve 28, push the piston of the cylinder 17, and drive the pneumatic sealing gate valve gate 15 to reciprocate in the horizontal direction, so that the pneumatic sealing gate valve valve opens during feeding, and the valve closes after the feeding is completed, thereby ensuring the airtightness of the device during feeding.

[0084] When the ball mill motor is working, it drives the gear transmission device 24 to operate, and then drives the pinion 39 to rotate. The pinion engages with the gear conveyor 21 on the outer tank body 25 of the double-layer ball mill fermentation tank, and then drives the double-layer ball mill fermentation tank body 20 to rotate. When the double-layer ball mill fermentation tank body 20 rotates, the crushing balls 30 in the tank adhere to the inner wall of the inner cylinder 38 and rotate together with the inner cylinder 38 under the friction force and centrifugal force of the wear-resistant lining plate 29. After the crushing balls 30 are brought to a certain height, the speed of the crushing balls 30 drops to zero. Due to the gravity of the crushing balls 30 themselves, they fall freely or fall, which impacts the materials. At the same time, the crushing balls will also slide and roll, so that the materials in between are subjected to stripping and grinding force, so that the materials are continuously impacted and stripped and crushed. When the medium falls, it impacts the material to generate an axial thrust. Therefore, although the double-layer ball mill fermentation tank body 20 is placed horizontally, the material can slowly flow from the feed end to the discharge port 33 to complete the continuous crushing pretreatment; the fermented material enters the discharge end, and is discharged from the discharge port 33 after the discharge plug 32 is removed.

[0085] The double-layer ball mill fermentation tank body 20 is provided with a crushing ball barrier net 31.

[0086] Preventing the crushing balls 30 from being discharged together with the fermented materials can ensure continuous ball milling pretreatment of the solid biomass raw materials.

[0087] When in use, the time, temperature, pH and ORP information are input through the information input module, and the information analysis module analyzes the input information. After the analysis, the time, temperature, pH and ORP information are transmitted to the PLC control module; after the PLC control module receives the information, the hot circulating water inlet module controls the hot circulating water inlet and the hot circulating water outlet to be connected to the water inlet pipe and the water outlet pipe respectively, and the solenoid valve is opened at the same time, and the feeding motor and the ball mill motor are controlled to run through the motor module so that they are closed when circulating hot water, and the hot circulating water inlet and the hot circulating water outlet module controls the hot circulating water inlet and the hot circulating water outlet to be disconnected from the water inlet pipe and the water outlet pipe respectively, and the solenoid valve is closed at the same time, and the temperature / PH / ORP control module is used to detect and adjust the temperature / PH / ORP in the fermentation process, and the control command of the PLC control module is further transmitted to the command output unit; the command output unit extracts the control command of the PLC control module, then confirms it, and finally executes it.

Claims

1. A horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation, characterized in that: It includes a screw feeding system (A), a ball mill fermentation system (B), an automatic control system (C), a frame (D) and a base (E); The spiral feeding system (A) and the ball mill fermentation system (B) are supported by a frame (D), the frame (D) is a hollow structural member, the base (E) is a flat structural member, and the frame (D) is fixed to the base (E) by mounting and dismounting screws; the automatic control system (C) is connected to the spiral feeding system (A) and the ball mill fermentation system (B) respectively; The screw feeding system (A) comprises an auger screw feeder (1), a pneumatic sealing gate valve (2), a left end support (3) and a middle end support (4); the auger screw feeder (1) is supported by the left end support (3) and the middle end support (4); the pneumatic sealing gate valve (2) is arranged outside the auger screw feeder (1); the gate size of the pneumatic sealing gate valve (2) is the same as the size of the sealing plate clamp (12) on the feed pipe groove (11) of the auger screw feeder, and is located in the same plane parallel to the base (E); the feeding motor is connected to one end of the auger shaft (7) of the auger screw feeder; The auger screw feeder (1) is a cylindrical welded component, comprising a feed pipe groove (11), a sealing plate clamp (12), a feed pipe groove (6), an auger shaft (7), a spiral feeding blade (8), a rhombus seat (13), a hexagonal bolt (9) and a roller bearing with a seat (14). The feed pipe groove (11) is welded to the surface of the cylindrical outer shell of the feed pipe groove (6). A sealing plate clamp (12) is provided on the top outer edge of the feed pipe groove (11). The sealing plate clamp (12) is used in conjunction with a plug plate (15). The size of the plug plate (15) is the same as that of the sealing plate clamp (12) on the feed pipe groove (11) and is located in the same plane parallel to the base. The welded portion of the circular cylinder of the feed pipe groove (6) and the feed pipe groove (11) is provided with a through hole of corresponding size. An end cover is provided at one end of the circular cylinder of the pipe groove (6), and the end cover is connected to the circular cylinder of the feed pipe groove (6) as a whole. A rhombus seat (13) and a roller bearing with a seat (14) are installed on the end cover. The roller bearing with a seat (14) is fixed to the rhombus seat (13) by a hexagonal bolt (9), and then fixed to the end cover. The other end of the circular cylinder of the feed pipe groove (6) is inserted into the circular through hole groove of the middle end support (4) through an interference fit; one end of the auger shaft (7) is inserted into the circular through hole groove of the middle end support (4) through a sealing device (10) through an interference fit with the roller bearing with a seat (14) on the end cover, and the other end passes through the circular cylinder of the feed pipe groove (6) and extends to the end cover of the double-layer ball mill fermentation tank body (20); the spiral feeding blade (8) is fixedly welded to the auger shaft (7), and its horizontal length is the same as the length of the auger shaft (7); The auger screw conveyor (1) is supported by a left end support (3) and a middle end support (4). The left end support (3) is a semicircular fixed support and a flat support casting, which is fixed to the conveying pipe groove (6) by a set screw (5). The inner radius of the semicircular fixed support is equal to the outer radius of the conveying pipe groove (6). The flat support is fixed to the fixed base (E) and is used to support the feeding part of the auger screw conveyor (1). The central axis of the pipe groove of the auger screw conveyor (1) is aligned with the tank body (2 of the double-layer ball mill fermentation tank). 0) are on a straight line; the middle end support (4) is a circular fixed support and a flat support welded casting, the through hole of the circular fixed support is provided with grooves at both ends, the circular cylinder of the auger screw feeder (1) is inserted into the groove at one end by interference fit, the hollow shaft on the end cover of the outer tank body (25) of the double-layer ball mill fermentation tank is inserted into the groove at the other end by interference fit through a deep groove ball bearing (19) and a sealing device (10), and the flat support is fixed on the fixed base (E) for supporting the auger screw feeder (1); The seated roller bearing (14) is fixed to the diamond seat (13) by means of hexagonal bolts (9), and further fixed to the end cover of the circular cylinder of the feed pipe groove (6), and comprises an outer ring, an inner ring, a rolling element, a retaining frame, a seal, and lubricating oil. The diamond seat (13) is fixed to the middle part of the seated roller bearing (14) and the end cover by means of hexagonal bolts (9), and forms an interference fit with the sealing device (10); The pneumatic sealing gate valve (2) comprises a gate (15), a connector (16), a cylinder (17) and an auxiliary support frame (18); the gate (15) is made of cast iron, one end of which is fixed to the connector (16) by a hexagonal bolt and a hexagonal nut; one end of the connector (16) is connected to the gate (15), and the other end is connected to the cylinder device; the cylinder (17) in the cylinder device is fixed to the cylinder seat by a set screw; the cylinder seat is supported by a plurality of cylinder support frames, and is auxiliary supported by a plurality of auxiliary support frames (18); each cylinder support frame is assisted by two auxiliary support frames (18); The ball mill fermentation system (B) comprises a double-layer ball mill fermentation tank body (20), a gear conveyor belt (21), a gear transmission device (24), and a deep groove ball bearing (19). The double-layer ball mill fermentation tank body (20) is a cylindrical welded part, one end of which is a welded part of a circular cylinder, an end cover and a hollow shaft, and the other end is a welded part of an end cover, a deep groove ball bearing (19) and a solid shaft. The tank body is supported on a middle end support (4) and a right end support (22) respectively through the hollow shafts on the end covers at both ends. The hollow shaft at one end of the tank body close to the feeding system passes through the deep groove ball bearing (19) and is inserted into the groove of the middle end support (4) through an interference fit. A sealing device (10) is installed in the middle part of the groove and the hollow shaft. The sealing device (10) forms an interference fit to ensure the air tightness of the device during operation. The deep groove ball bearing (19) is fixed on the rhombus seat (13) under the tightening action of the hexagonal bolt (9). A key (36) and a shaft shoulder (35) are installed in the weldment at one end of the tank body close to the gas collecting device. Under the action of the key (36) and the shaft shoulder (35), the deep groove ball bearing (19) is stably fixed on the end cover; the right end support (22) is a casting of a circular structure and a flat bracket, and the hexagonal bolt (9) passes through the through hole on the diamond seat (13), the deep groove ball bearing (19) and the right end support (22) to connect the deep groove ball bearing (19) with the diamond seat (13). ) and the right end support (22) are fastened together, the end cover, the deep groove ball bearing (19) and the solid shaft welded parts pass through the circular through hole of the right end support (22), and are fixed to the circular structure of the right end support (22) by means of a set screw (5), and the gas collecting pipe (34) passes through the entire end cover, the deep groove ball bearing (19) and the solid shaft welded parts, one end of which extends to the end cover of the double-layer ball mill fermentation tank body (20), and the other end extends to the outside of the solid shaft; The double-layer ball mill fermentation tank body (20) comprises an outer tank body (25), an inner cylinder body (38), a hot circulating water inlet (27), a hot circulating water outlet (37), and a solenoid valve (28); the cavity between the outer tank body (25) and the inner cylinder body (38) is used for circulating hot water; the outer tank body (25) is provided with a hot circulating water inlet (27) and a hot circulating water outlet (37); both the hot circulating water inlet (27) and the hot circulating water outlet (37) are cylindrical structures; the hot circulating water inlet (27) is arranged at the bottom of the left end of the outer tank body (25) of the double-layer ball mill fermentation tank; the hot circulating water outlet is arranged at a position corresponding to the hot circulating water inlet (27) at the top of the right side of the outer tank body (25) of the double-layer ball mill fermentation tank; and both the hot circulating water inlet (27) and the hot circulating water outlet (37) are provided with a solenoid valve (28); The inner cylinder (38) of the double-layer ball mill fermentation tank comprises a wear-resistant lining (29), a crushing ball (30), a crushing ball barrier net (31), a discharge port (33), and a discharge port plug (32). The wear-resistant lining (29) is a cylindrical structure, and there are eight of them in total. The sizes are exactly the same, and the central axis thereof is parallel to the central axis of the inner cylinder (38) of the double-layer ball mill fermentation tank. The angle between the connecting line of each central axis and the central axis of the inner cylinder is used as the positioning standard, and the wear-resistant linings (29) are evenly fixed to the inner cylinder (38) of the double-layer ball mill fermentation tank at intervals of 45 degrees. On the inner wall; one end of the wear-resistant lining (29) extends to the end cover of the inner cylinder (38) of the double-layer ball mill fermentation tank, and the other end extends to the crushing ball barrier net (31); the crushing ball barrier net (31) has a plurality of honeycomb-shaped uniform grids, which are fixed to the cross section of the inner cylinder (38) of the double-layer ball mill fermentation tank and connected to the left end of the wear-resistant lining (29) to block the crushing balls (30); the crushing balls (30) are made of aluminum oxide and are placed in the inner cavity of the inner cylinder (38) of the double-layer ball mill fermentation tank and on the left side of the crushing ball barrier net (31), with a diameter of 3 cm, the number of the crushing balls (30) is determined according to the quality of the fermented material; the discharge port (33) is arranged on the right side of the crushing ball barrier net (31), penetrates to the outside of the outer tank body (25) of the ball mill fermentation tank, and is located on the same horizontal line as the hot circulating water inlet (27); the discharge port (33) is provided with a discharge port plug (32), and the discharge port plug (32) and the discharge port (33) are interference fit, and the material is rubber material.

2. A horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation according to claim 1, characterized in that: The gear conveyor belt (21) is fixed on the outer tank body (25) of the double-layer ball mill fermentation tank, and forms a meshing transmission with the pinion (39) in the gear transmission device, and the gear transmission device includes two identical pinion transmission systems and a fixed base, and the two identical pinion transmission systems are respectively arranged at symmetrical positions on both sides of the double-layer ball mill fermentation tank, one of which is a driving wheel system and the other is a driven wheel system; The pinion transmission system comprises a pinion shaft (41), a vertical seat bearing (40), a pinion (39), a key (36), a shaft shoulder (35), a hexagonal bolt (9), a flat washer (42) and a spring washer (43). The pinion (39) is sleeved together with the pinion shaft (41) through the key (36) and the shaft shoulder (35) and is fixed at the middle position of the pinion shaft (41). The pinion shaft (41) drives the double-layer ball mill fermentation tank body (20) to rotate through the middle pinion (39). Two ends of the pinion shaft (41) respectively penetrate two vertical seat bearings (40) and form an interference fit. The two vertical seat bearings (40) are fixed to the fixed base through four hexagonal bolts (9). The connection between the vertical seat bearings (40) and the hexagonal bolts (9) is equipped with a flat washer (42) and a spring washer (43). The transmission device base 23 is a rectangular plane steel plate fixed to the base (E) of the entire device.

3. The horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation according to claim 1, characterized in that: The automatic control system (C) comprises an information input module (44), an information analysis module (45), a PLC control module (46) and a command output module (47), wherein the information input module (44) is connected to the information analysis module (45), the information analysis module (45) is connected to the PLC control module (46), and the PLC control module (46) is connected to the command output module (47); The information input module (44) comprises a time information input unit, a temperature information input unit, a pH information input unit and an ORP information input unit, so as to input the time of circulating hot water, motor operation time, temperature, pH and ORP information; the PLC control module (46) comprises a hot circulating water connection module, a motor module, a hot circulating water disconnection module and a temperature / PH / ORP control module; the command output module (47) comprises a command extraction unit, a command determination unit and a command execution unit.

4. The horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation according to claim 1, characterized in that: The pneumatic sealing gate valve (2) is made of a stainless steel-rubber mixed material.

5. The horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation according to claim 1, characterized in that: The sealing device (10) is a mechanical seal.

6. The horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation according to claim 1, characterized in that: The cylinder seat, cylinder support and auxiliary support frame (18) are all made of cast iron.

7. The horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation according to claim 1, characterized in that: The crushing ball (30) is made of alumina and has a diameter of 3 cm.

8. The horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation according to claim 1, characterized in that: The crushing ball barrier net (31) is a honeycomb mesh structure.

9. The horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation according to claim 1, characterized in that: The wear-resistant lining plate (29) is made of stainless steel.

10. The horizontal constant temperature anaerobic bioreactor for simultaneous ball milling pretreatment and microbial fermentation according to claim 3, characterized in that: The PLC control module (46) controls the temperature in the tank to be between 30 and 65°C, the pH value to be between 5 and 8, and the ORP to be between 200 and 600 mv, and simultaneously controls the feed motor, the hot water circulation pump and the solenoid valve.

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